EP 3721554 A4 20201209 - AN ACTIVE LIMITING SYSTEM
Title (en)
AN ACTIVE LIMITING SYSTEM
Title (de)
AKTIVES BEGRENZUNGSSYSTEM
Title (fr)
SYSTÈME DE LIMITATION ACTIF
Publication
Application
Priority
TR 2017050625 W 20171204
Abstract (en)
[origin: WO2019112523A1] In the present invention, an active limiting system that is suitable to protect a low noise amplifier (LNA) against the high power signals received from a signal input (Ri) is provided. Said active limiting system comprises, at least one first switch (T1), source (s) of which is connected to a gate voltage (Vg); at least first resistor (R1) which is connected between the gate (g) and source (s) of the first switch (T1); at least one second resistor (R2), which is connected between a drain voltage (Vd) and drain (d) of the first switch (T1); at least one second switch (T2), source (s) of which is connected to said drain voltage (Vd) and drain (d) of which is connected to a signal input (Ri); at least one third resistor (R3) which is connected between the drain (d) of the first switch (T1) and gate (g) of the second switch (T2); at least one first filtering element (b1), which blocks DC currents/voltages and which is connected between the source (s) of the second switch (T2) and ground.
IPC 8 full level
H03F 1/26 (2006.01); H03F 1/52 (2006.01); H03F 3/195 (2006.01); H03G 7/08 (2006.01); H03G 11/00 (2006.01); H04B 1/04 (2006.01)
CPC (source: EP US)
H03F 1/26 (2013.01 - EP US); H03F 1/52 (2013.01 - US); H03F 1/523 (2013.01 - EP); H03F 3/195 (2013.01 - EP US); H03G 7/08 (2013.01 - EP); H03G 11/00 (2013.01 - EP); H03G 11/02 (2013.01 - US); H03G 11/04 (2013.01 - US); H03F 2200/294 (2013.01 - EP US); H03F 2200/372 (2013.01 - US)
Citation (search report)
- [IA] EP 1860772 A2 20071128 - SAMSUNG ELECTRONICS CO LTD [KR]
- [IA] US 4173739 A 19791106 - YOSHIDA TADAO [JP]
- [A] JP H06216682 A 19940805 - SONY CORP
- [A] US 6075414 A 20000613 - NAGAOKA MASAMI [JP], et al
- See references of WO 2019112523A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
WO 2019112523 A1 20190613; CN 110731048 A 20200124; CN 110731048 B 20230324; EP 3721554 A1 20201014; EP 3721554 A4 20201209; EP 3721554 B1 20230419; US 10985707 B2 20210420; US 2020091872 A1 20200319
DOCDB simple family (application)
TR 2017050625 W 20171204; CN 201780091797 A 20171204; EP 17934157 A 20171204; US 201716617530 A 20171204